1 files changed, 5 insertions, 0 deletions

diff --git a/kernel/sched.c b/kernel/sched.c
index 186c6fd08acf..cc397aae5eae 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -9654,12 +9654,17 @@ static void cpuacct_charge(struct task_struct *tsk, u64 cputime)
                 return;
 
         cpu = task_cpu(tsk);
+
+        rcu_read_lock();
+
         ca = task_ca(tsk);
 
         for (; ca; ca = ca->parent) {
                 u64 *cpuusage = percpu_ptr(ca->cpuusage, cpu);
                 *cpuusage += cputime;
         }
+
+        rcu_read_unlock();
 }
 
 struct cgroup_subsys cpuacct_subsys = {